In the spring of March, when everything is growing and the earth is full of vitality, many farmers in Tianjin, a port city, rely on fishery hygiene, especially the development of fish pond aquaculture. Through chatting, it was found that fish pond aquaculture is now affected by two aspects: severe water pollution and increased aquaculture density per unit area, resulting in insufficient dissolved oxygen in the water and frequent fish diseases. To avoid these problems, experts suggest that farmers equip themselves with basic fish farming equipment, such as water aerator accessories, dissolved oxygen detectors, fish pond disinfection sprayers, etc. Among them, the aerator type is essential, which has the functions of stirring water, aerating, mixing, and aeration. These functions are completed simultaneously during the operation of the machine.

The principle of an aerator is actually very simple, which is to increase the dissolved oxygen in the water, so that fish have a better living environment. Usually, after turning on the machine, it sucks up the oxygen poor water at the bottom and pushes it out to turn stagnant water into living water. The water under the impeller is strongly stirred by the blades and pipes, causing water jumps and waves on the surface of the water, forming a water curtain that can wrap around the air. This not only expands the surface area of the gas-liquid interface, but also thins and continuously updates the double film between the gas and liquid, promoting the dissolution rate of oxygen in the air. Whether it is at night or in the morning, or on sunny days at noon, the stirring and water jumping effects of the aerator components accelerate the escape rate of toxic gases (hydrogen sulfide, ammonia, methane, sulfur dioxide, etc.) in the water. It plays a role in purifying water quality.

It is worth mentioning that the use of aerators must be combined with water quality. Only by determining the start-up and operation time reasonably based on the internal laws of water quality changes and the different roles played by aerators in different situations, can the efficiency of aerators be fully utilized. The oxygenation effect and effectiveness of the aerator accessories can only be reflected at night and in the early morning when the dissolved oxygen in the pond is low. Considering that the oxygenation value of the aerator is only a little over 1 kilogram per kilowatt hour, its effect on the balance of oxygen in the pond is very small. Therefore, it should be turned on before the "floating head" or with an extended time to make up for it. This not only fundamentally improves the oxygen conditions of the lower water layer, but also reduces the amount of harmful substances and oxygen debt produced by anaerobic bacterial decomposition; And it also plays an important role in reducing the floating head the next morning. Therefore, during the growing season of fish, it is necessary to seize every sunny day and persist in turning on the water at noon in order to seize the initiative to improve water quality and provide a better living environment for fish.